Now that 2 factor authentication is mandatory on IE during the login process which by the way, is a good idea in terms of security of your account.
Is it possible for IE to introduce an alternate 2fa other than mobile SMS?
How about Google Authenticator, a free authenticating app?
Here is a WiKi link explaning what SIM swapping is,
As IE wishes users to initiate 2fa during login, why not make it more secure rather than just making the login process more complicated?